Well ya it all nosler bullet data, but the amount of powder in a case is still that much powder in a case, whether they use your powder for your cartridge is still a hit or miss deal, but I'm finding like all the long time loaders here say,, it's all about cross referance,, over,, and over,, and,,,
I don't know about Sierra, they don't wanna give ya any data on line,,besides a link to buy their book,,it's a good thick book though. Our local supply is a Scheels store, they have 6-7 books available at their counter for any one to look up data, kinda handy, if you buy Sierra bullets, or Hornady, or Nosler ect,,, at least you can look what to load,,I guess it helps Scheels sell powder,,